Cupid is the Roman god of love. He is the counterpart of the Greek god called Eros, the god of erotic love, the painful desire of what is not possessed, of what is somewhere else, inciting the imagination about the absent desired other.
Her eyes gaze at the void while she is deeply immersed in thoughts. Her hands as trying to reach and hold the pain inside. As Siri Hustvedt points out, the somatic experience induced by thoughts are no less real than a direct somatic experiences out in the world. Or as Hannah Arendt said, every emotion is a somatic experience. The source of our imagination and thinking are our feelings. Our feelings are the interpretation and meanings given to what our body senses experience. According to Antonio Damasio, the mind is a product of our body, not a distinct apart from it.
The image has a kind of movement, she is not still but moving, either in a bodily sense reacting to her feelings or in a mental sense of the dizziness, caused the mental travel.
Such movement in the image is not only suggested by her body expression and composition but also by the backdrop in a leaning position. The rugged backdrop is a curtain which suggest the scene is in a private setting. We look not as spectators of the scene but as a voyeur of what was supposed to be behind curtains. On the other hand, it also symbolizes a stage background of a performed act, like in a theater, like a fancy sculpture.